Word UFO Day has been founded by UFO hunter Haktan Akdogan in 2001 and should give you the opportunity to reflect and ponder about the possibility that we are not alone in the universe.There are many reasons why this day became popular in the UFO community. First of all it it commemorate the birthday of Kenneth Arnold having his UFO observation near Mount Rainier on June 24th, 1947 with his CallAir monoplane.